Preheat oven to 450 degrees.

Butter two 4-ounce ramekins (or regular-sized muffin tins) and lightly dust the inside of each ramekin with cocoa powder, tilting to coat; tap out any excess and set aside.

Heat butter and chocolate in heatproof bowl set over (but not touching) simmering water until chocolate is almost completely melted. (*You can also do this carefully in the microwave.*)

Meanwhile, in the bowl of an electric mixer fitted with the whisk attachment, whisk together eggs, egg yolks, and sugar until light and thick. Slowly add butter mixture to mixer; add flour, cinnamon, chili powder, cayenne and mix until well combined. Divide batter between prepared ramekins. Place ramekins on a baking sheet and transfer to oven. Bake until sides are set and center is soft, 7 to 10 minutes.

Invert each mold onto a plate and let stand for about 10 seconds. Gently tap the tops of molds and carefully lift to remove. Sprinkle with confectioners’ sugar, if desired. Serve immediately – either solo, or accompanied by ice cream, whipped cream, berries, or whatever else sounds good! :-)